<!doctype html>
<title>Test cross origin load of media document in parts</title>
<link rel="motivation" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1781759">
<script src=/resources/testharness.js></script>
<script src=/resources/testharnessreport.js></script>
<script src="/common/get-host-info.sub.js"></script>
<body></body>
<script>
promise_test(async () => {
  const frame = document.createElement('iframe');
  const dir = location.pathname.replace(/\/[^\/]*$/, '/');
  frame.src =
    // remote origin intermediate document
    get_host_info().HTTP_NOTSAMESITE_ORIGIN + dir
    // iframe-document.sub.html has an iframe with src=childsrc.
    + 'resources/iframe-document.sub.html?childsrc='
    // same origin video document, so that we can play().
    + get_host_info().ORIGIN
    // 'PartialContent' ensures that the entire video resource does not load
    // in one fetch.
    + '/service-workers/service-worker/resources/fetch-access-control.py?'
    + 'VIDEO%26PartialContent';

  let v = document.createElement("video");
  frame.src += "%26mp4";

  document.body.appendChild(frame);
  await new Promise(resolve => frame.onload = resolve);

  const inner = frame.contentWindow.frames[0];
  const video = inner.document.body.childNodes[0];
  video.muted = true;  // to allow playback
  return video.play();
});
</script>
